In a hidden studio in Rome, an art expert is found dead in front of one of the most beautiful paintings Nic Costa has ever seen - an unknown Caravaggio masterpiece. But before long, tragedy will strike Nic far closer to home. The main suspect's identity is known, but he remains untouchable protected by a fleet of lawyers and a sinister cult known as the Ekstasists. If Costa can crack the reasons for the cult's existence, he may well stand a chance of nailing his wife's killer. But the mystery will take him right back to Caravaggio himself and the reasons he had to flee Rome, all those centuries before...